Overdue Refund from dealership!

I have a service plan with Motorvaps and my car was serviced at Suzuki Northcliff in April 2019. At the time i paid for the service and Motorvaps also paid the dealership after that. I am suppose to receive a refund for the payment that i made for the service. However, i have been waiting since April 2019 and It is now the 9th July 2019 and i am still awaiting the refund. It is really pathetic. I have been patient and have been ignored. As payment is expected for services rendered i too expect good customer service. Its been 3 months now and this is my last resort and also my last interaction with the dealership as i am obviously not deemed as a valued customer.

If i could be assisted i would highly appreciate it as i think i have given the dealership a fair chance.

Thank you!